Rothera hits $3bn in event contracts and nears 10% US market share
Rothera Exchange and Clearing has processed $3 billion in event contracts during its first two months of US operations and is approaching a 10% market share. The institutional-grade exchange launched in 2026 and targets large-scale market participants seeking to hedge risks or speculate on outcomes. Rothera aims to serve institutional players rather than retail traders as it scales in the regulated event-contracts space.
Rothera's $3 billion debut makes it the fastest-scaling CFTC-registered exchange outside Kalshi and Polymarket. Institutions now have a third venue with proved clearing capacity and dedicated market-making infrastructure. That fragmentation tightens spreads for block-size traders but splits liquidity across venues. For Robinhood, which routes event contracts through its co-owned Rothera joint venture, the exchange's growth validates the vertical-integration bet that severed Kalshi dependence.
Kalshi now faces volume erosion on two fronts: Robinhood's captive flow and Rothera's direct institutional pull. The 10% market-share threshold matters because it signals Rothera can survive without Robinhood's order stream. If Congress bans sports event contracts this session, Rothera's institutional base becomes its political shield: proved hedging utility, not retail gambling.
Rothera's ascent joins Robinhood's recent shift to clear event contracts through its co-owned exchange rather than white-labeling through Kalshi, part of a broader pattern where platforms that once relied on partner rails now build their own.